ATEC Insider Trading Activity

Transactions disclosed by company insiders to the SEC on Form 4, most recent first.

InsiderRoleDateSharesValue
Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC. 2026-08-05 8,168 $78,821

How Institutional Funds Moved on ATEC

Position changes disclosed in SEC Form 13F filings. These report a quarterly snapshot, not exact trade dates.

FundChangeQuarter
ADVENT CAPITAL MANAGEMENT /DE/ ADVENT CAPITAL MANAGEMENT /DE/ opened a new position worth $33,693,439. 2026-06-30
BRAIDWELL LP BRAIDWELL LP increased this position by 139% ($23,639,248 -> $56,496,947). 2026-06-30
JACOBS LEVY EQUITY MANAGEMENT, INC JACOBS LEVY EQUITY MANAGEMENT, INC opened a new position worth $28,995,950. 2026-06-30
VOYA INVESTMENT MANAGEMENT LLC VOYA INVESTMENT MANAGEMENT LLC exited a position previously worth $67,312,985. 2026-06-30
NEXT CENTURY GROWTH INVESTORS LLC NEXT CENTURY GROWTH INVESTORS LLC exited a position previously worth $25,789,701. 2026-06-30
Hood River Capital Management LLC Hood River Capital Management LLC exited a position previously worth $25,033,781. 2026-06-30
Point72 Asset Management, L.P. Point72 Asset Management, L.P. exited a position previously worth $27,130,096. 2026-06-30
SILVERBACK ASSET MANAGEMENT LLC SILVERBACK ASSET MANAGEMENT LLC opened a new position worth $21,023,891. 2026-06-30

Which Funds Hold ATEC

Largest reported positions as of 2026-06-30.

FundValueShares
BRAIDWELL LP $66,183,358 69,121,000
AMERICAN CENTURY COMPANIES INC $56,412,361 6,521,659
VANGUARD CAPITAL MANAGEMENT LLC $44,311,191 5,122,681
ADVENT CAPITAL MANAGEMENT /DE/ $33,693,439 35,108,000
CAPSTONE INVESTMENT ADVISORS, LLC $33,130,636 33,247,000
JACOBS LEVY EQUITY MANAGEMENT, INC $28,995,950 3,352,133
GEODE CAPITAL MANAGEMENT, LLC $23,695,528 2,738,762
TREMBLANT CAPITAL GROUP $22,297,961 2,577,799
SILVERBACK ASSET MANAGEMENT LLC $21,023,891 22,028,000
AQR Arbitrage LLC $20,421,560 21,328,000

Data compiled from public SEC filings. This is informational reporting, not investment advice.

VOYA INVESTMENT MANAGEMENT LLC: 13F Portfolio Moves Tracked Quarterly

Chart summarizing VOYA INVESTMENT MANAGEMENT LLC 13F portfolio moves for the quarter ending 2026-03-31

This page tracks VOYA INVESTMENT MANAGEMENT LLC’s institutional portfolio moves as disclosed in its quarterly SEC Form 13F filings. Rather than a one-time snapshot, this profile is built to grow over time, with each new quarter’s filing added below so readers can follow how the fund’s stock holdings shift, expand, or shrink release by release. … Read more